Lamp



FIG. 1 is a front perspective view of a lamp showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is a rear elevational view thereof.

The object whose design is claimed is a figure of revolution, and so all front perspective views and side elevational views, as in FIGS. 1 and 3, respectively, are identical. 

The ornamental design for a lamp, as shown and described. 